Dear all, 
An idea on how to get to the core of the issue for the 'idea kernel' assignment is to be in the field. E.g. For one of mine, I sat in a cafe whose niche market is mum with toddlers, for 4 hrs and I could see pains and tribulations I did not imagine. 
Perhaps this may get you to make some trips around in Stockholm? 
Cheers!
Jovin Hurry